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Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

What is the value of x? enter your answer in the box. x =

For what values of a is the sum of the fractions 2a−1 / 4 and a−1 /3 positive?